Mod your Beresford 7520

Hi AoS members,

My current op amp in my 7520 are 4032(line) 49720(hp). I do not have the cap remove on the hp. What do I gain if I remove it? as in the sound will be warmer or better range etc. And one last thing, Did I put this two op amp in the correct way?

Thats it David-I have ordered two OPA2132's. I will hold you personally accountable if I have wasted $8 :lol:

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Originally Posted by Codifus

Neither chip is perfect, but the OPA2132 advantages handily outweigh its faults in my setup. Bottom line is that I really, really, like listening to it. I turn on my system and listen for hours again.:smoking:

CD

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Sounds like a similar opamp to the AD826 & OPA2107.

I had exactly the same issue with LM4562NA on the Caiman (& also the 7520) ....mid-range and bass lull. Still decent but as you say doesn't get the foot tapping.

I may try a 2132 yet but this stash of opamps is really building up :)

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Originally Posted by marscay

Sounds like a similar opamp to the AD826 & OPA2107.

I had exactly the same issue with LM4562NA on the Caiman (& also the 7520) ....mid-range and bass lull. Still decent but as you say doesn't get the foot tapping.

I may try a 2132 yet but this stash of opamps is really building up :)

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YOU may try the OPA2132? Now you've got me extremely curious about the AD826 and OPA2107! When will this opamp swapping ever end?:lol:

CD

Quote:

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Originally Posted by Codifus

When will this opamp swapping ever end?:lol:

CD

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Just after we reach that point of satisfaction, yes never hehe.

Quote:

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Originally Posted by marscay

Sounds like a similar opamp to the AD826 & OPA2107.

I had exactly the same issue with LM4562NA on the Caiman (& also the 7520) ....mid-range and bass lull. Still decent but as you say doesn't get the foot tapping.

I may try a 2132 yet but this stash of opamps is really building up :)

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Ahh that's great! I thought it was just me...

Going from the 4562NA + MCL5/6 + PCM1716 to the WM8716 DAC, a lot of the frequency ranges sound a bit skew-if compared to previously (On my K701s). Guitars sound ridiculously recessed and harmonic distortion seems more prominent than it was before (Something the K701s are bad with anyway).
I hooked the DAC into my speakers and found the opposite, that everything was better represented than before.

Since I bought this DAC primarily as a headphone amp, this is slightly puzzling.
I've been running it in for about ~140 hours so far with the new DAC, and I'm not sure if my ears are used to it yet. Though from previous experience, when it sounds 'right' it hits you right between the ears straight away.

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Originally Posted by ZebuTheOxen

Going from the 4562NA + MCL5/6 + PCM1716 to the WM8716 DAC, a lot of the frequency ranges sound a bit skew-if compared to previously (On my K701s). Guitars sound ridiculously recessed and harmonic distortion seems more prominent than it was before (Something the K701s are bad with anyway).
I hooked the DAC into my speakers and found the opposite, that everything was better represented than before.

Since I bought this DAC primarily as a headphone amp, this is slightly puzzling.

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Solder back the MLC5/6 and do a listening test again.

The 4562NA has been chosen for the Caiman for more than one reason. So don't dispose of them. You might need to dig them up later again...

NOTE OF WARNING: Many opamps are static sensitive! They should be handled with care and avoid touching the pins. I have had a couple of THS4032 fail on me from static breakdown faults.

Stan

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Originally Posted by Covenant

Thats it David-I have ordered two OPA2132's. I will hold you personally accountable if I have wasted $8 :lol:

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Hey Jerry,
Could you let me know please where you got your 2132's from?
I'm having trouvle sourcing them in the UK.


Ta,
(My Google-Fu must be weak, I have the flu) :)

Hi Gaz,
I just used Ebay, an American site. They send them first class for buttons and I dont mind waiting. Just put the reference in on Uk Ebay and it should appear at the bottom of the page.
Have you passed on Mike's cables yet?
Jerry

Thanks for that.

Yeah the other Jerry should have had them for a couple of days now :)